CP-violating decays of the pseudoscalars η and η' and their connection to the electric dipole moment of the neutron

被引：17

作者：

Gutsche, Thomas ^{[1
]}

Blin, Astrid N. Hiller ^{[2
]}

Kovalenko, Sergey ^{[3
,4
]}

Kuleshov, Serguei ^{[3
,4
]}

Lyubovitskij, Valery E. ^{[1
,3
,4
,5
,6
]}

Vacas, Manuel J. Vicente ^{[2
]}

Zhevlakov, Alexey ^{[5
]}

机构：

[1] Univ Tubingen, Kepler Ctr Astro & Particle Phys, Inst Theoret Phys, Morgenstelle 14, D-72076 Tubingen, Germany

[2] Univ Valencia, CSIC, Inst Invest, Inst Fis Corpuscular, Ap Correos 22085, E-46071 Valencia, Spain

[3] Univ Tecn Federico Santa Maria, Dept Fis, Casilla 110-5, Valparaiso, Chile

[4] Univ Tecn Federico Santa Maria, CCTVal, Casilla 110-5, Valparaiso, Chile

[5] Tomsk State Univ, Dept Phys, Tomsk 634050, Russia

[6] Tomsk Polytech Univ, Dept Math Phys, Lab Particle Phys, Tomsk 634050, Russia

来源：

PHYSICAL REVIEW D | 2017年 / 95卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

ISOBAR MODEL; FORM-FACTOR; ELECTROPRODUCTION; CONSERVATION;

D O I：

10.1103/PhysRevD.95.036022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the present upper bound on the neutron electric dipole moment, we give an estimate for the upper limit of the CP-violating couplings of the eta(eta') to the nucleon. Using this result, we then derive constraints on the CP-violating eta(eta')pi pi couplings, which define the two-pion CP-violating decays of the eta and eta' mesons. Our results are relevant for the running and planned measurements of rare decays of the. eta and eta' mesons by the GlueX Collaboration at JLab and the LHCb Collaboration at CERN.

引用

页数：9

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